The tree of life should perhaps be called the coral of life, base of branches dead; so that passages cannot be seen—this again offers contradiction to constant succession of germs in progress.


Charles Darwin's Notebooks, 1836–1844: Geology, Transmutation of the Species, Metaphysical Enquiries (1987), Notebook B


The tree of life should perhaps be called the coral of life, base of branches dead; so that passages cannot be seen—this again offers contradiction ...

The tree of life should perhaps be called the coral of life, base of branches dead; so that passages cannot be seen—this again offers contradiction ...

The tree of life should perhaps be called the coral of life, base of branches dead; so that passages cannot be seen—this again offers contradiction ...

The tree of life should perhaps be called the coral of life, base of branches dead; so that passages cannot be seen—this again offers contradiction ...